package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.StgyException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
  @Autowired private StringRedisTemplate stringRedisTemplate;
  @Autowired private SystemUserMapper systemUserMapper;

  @Override
  public CaptchaVo getCaptcha() {
    SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
    specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

    String code = specCaptcha.text().toLowerCase();
    String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
    String image = specCaptcha.toBase64();
    //  将验证码存入redis 设置验证码有效时间60s
    stringRedisTemplate
        .opsForValue()
        .set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

    return new CaptchaVo(image, key);
  }

  @Override
  public String login(LoginVo loginVo) {
    // 1. 判断是否输入了验证码
    if (!StringUtils.hasText(loginVo.getCaptchaCode())) {
      throw new StgyException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
    }
    //2.校验验证码
    String code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
    if (code == null) {
      throw new StgyException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
    }
    if (!code.equals(loginVo.getCaptchaCode().toLowerCase())) {
      throw new StgyException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
    }
    //3.根据用户名校验用户是否存在
    SystemUser systemUser = systemUserMapper.selectOne(Wrappers.lambdaQuery(SystemUser.class)
            .eq(SystemUser::getUsername, loginVo.getUsername()));
    if (systemUser == null){
      throw new StgyException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
    }
    //4.校验用户账号是否被禁用
    if (systemUser.getStatus() == BaseStatus.DISABLE) {
      throw new StgyException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
    }
    //5.校验用户密码 MD5加密 相同明文的加密结果相同
    if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))) {
      throw new StgyException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
    }
    // 6.登录成功 删除redis中的验证码
    stringRedisTemplate.delete(loginVo.getCaptchaKey());
    //7.创建并返回TOKEN
    return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());


  }

  @Override
  public SystemUserInfoVo getSystemUserInfoById(Long userId) {
    SystemUser systemUser = systemUserMapper.selectById(userId);
    // 封装数据
    SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
    systemUserInfoVo.setName(systemUser.getName());
    systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());

    return systemUserInfoVo;
  }


}
